Texas A&M quarterback Johnny Manziel (2) scores a touchdown on the Aggies opening drive during the first quarter of the Cotton Bowl college football game against Oklahoma, Friday, Jan. 4, 2013, in Cowboys Stadium in Arlington.

Photo By Nick de la Torre/Houston Chronicle

Texas A&M quarterback Johnny Manziel (2) celebrates his 23-yard touchdown over the Oklahoma defense during the first quarter of the Cotton Bowl college football game, Friday, Jan. 4, 2013, in Cowboys Stadium in Arlington.

Johnny Manziel made history when he won the Heisman Trophy as a freshman this year, but now the 20-year-old Aggie quarterback has a different kind of attention after his partying pictures and late night antics have come into the spotlight.

Manziel has a newfound celebrity, appearing on late-night talk shows, hanging out with stars and being seen courtside at a Dallas Mavericks game.

Now TMZ has posted pictures of the Texas A&M star with a bottle of Dom Perignon at a Dallas lounge, after the Texas A&M Aggies won the Cotton Bowl this weekend. The lounge is for 21-year-old patrons and up, and the football star does not turn 21 until December.

Yahoo Sports reported that he also posted a picture of himself holding a handful of cash on Instagram with a caption, "casino ballin." He later posted on his Twitter page, "Nothing illegal about being 18+ in a casino and winning money...KEEP HATING!"

Questions and criticisms have arisen about whether Manziel will face any legal consequences or whether he has violated any NCAA rules because of the apparent underage drinking.

In June 2012, Manziel was arrested after a fight erupted outside a bar and he showed officers two fake IDs.

Many of his fans believe Manziel has a reason to celebrate. This season, he led the Aggies in a 10-2 regular season, including a win against the then-No. 1 Alabama. The Aggies defeated Oklahoma Friday and Manziel ran 229 yards on 17 carries, completed 22-of-34 passes for 287 yards and had four touchdowns against the No. 11 team.

Manziel told members of the media Sunday that he is "the same small town guy" he's always been, according to the Dallas Morning News. He also said he might monitor his social media habits better.

"For people to recognize me everywhere I go now and how much notoriety comes along with this, it's been beyond my wildest imagination," he said.